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Commitments and Contingencies - Narrative (Details) $ in Millions	1 Months Ended	119 Months Ended
	Mar. 31, 2025 USD ($) bbl	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Line 901 Incident
Loss Contingencies [Line Items]
Aggregate total estimated costs	$ 870	$ 870
Line 901 Incident \| Current liabilities
Loss Contingencies [Line Items]
Remaining undiscounted liability	4	4	$ 5
Line 901 2015 Insurance Program
Loss Contingencies [Line Items]
Recoveries from insurance carriers		275
Coverage limit under insurance program	$ 500	500
Line 48 Incident
Loss Contingencies [Line Items]
Estimated size of release (in barrels) \| bbl	125
Self-insured retention	$ 10	10
Aggregate cost to clean-up and remediate	20	20
Clean-up and remediation activities	12	12
Arbitration Proceedings Against Insurers \| Minimum
Loss Contingencies [Line Items]
Receivable for remaining portion of release costs probable of recovery from insurance	$ 225	$ 225